OL98: Incorrect Message Class with Recurring Appointments (183024)
The information in this article applies to:
This article was previously published under Q183024 SYMPTOMS
You are programmatically manipulating appointment items in Microsoft
Outlook 98 and expect the message class of all appointment items to be
IPM.Appointment, but the message class of recurring appointments is:
IPM.OLE.CLASS.{00061055-0000-0000-C000-000000000046}
WORKAROUND
If you are writing code that expects IPM.Appointment as the message class
for recurring appointments, alter the code so that it takes into account
that the message class for recurring appointments will begin with
IPM.OLE.Class.
STATUS
Microsoft has confirmed this to be a problem in the Microsoft products
listed at the beginning of this article.
MORE INFORMATIONMicrosoft provides programming examples for illustration only, without warranty either
expressed or implied, including, but not limited to, the implied warranties of
merchantability and/or fitness for a particular purpose. This article assumes
that you are familiar with the programming language being demonstrated and the
tools used to create and debug procedures. Microsoft support professionals can
help explain the functionality of a particular procedure, but they will not
modify these examples to provide added functionality or construct procedures to
meet your specific needs. If you have limited programming experience, you may
want to contact a Microsoft Certified Partner or the Microsoft fee-based
consulting line at (800) 936-5200. For more information about Microsoft Certified
Partners, please visit the following Microsoft Web site:
For more information about the support options that are available and about how to contact Microsoft, visit the following Microsoft Web site:
You can use the following subroutine as an example of how to test to make
sure an item is an appointment item. The approach in this example can be
applied for use with Visual Basic Scripting Edition (VBScript). Make sure
that there is an item open in Outlook prior to running this Visual Basic
(VB) or Visual Basic for Applications (VBA) automation code.
Sub TestAppointment()
Set ol = CreateObject("Outlook.Application")
Set MyItem = ol.ActiveInspector.CurrentItem
MC1 = Left(MyItem.MessageClass, 15)
MC2 = Left(MyItem.MessageClass, 13)
If MC1 = "IPM.Appointment" or MC2 = "IPM.OLE.Class" Then
MsgBox "This is an appointment item."
Else
MsgBox "This is not an appointment item."
End If
End Sub
You can also use the following automation example in VB or VBA to test for
an appointment item. To use this example, you must reference Outlook's
object library.
Sub TestAppointment()
Set ol = New Outlook.Application
Set MyItem = ol.ActiveInspector.CurrentItem
If TypeOf MyItem Is AppointmentItem Then
MsgBox "This is an appointment item."
Else
MsgBox "This is not an appointment item."
End If
End Sub
This behavior did not occur with Microsoft Outlook 97. One side effect of
this behavior is that older versions of the Outlook Calendar Template for
Word 97 will not retrieve recurring appointments when used with Outlook 98.
For more information about obtaining a version of the Outlook Calendar
Template for Word 97 that is designed to work with both Outlook 97 and
Outlook 98, please see the following article in the Microsoft Knowledge
Base:
180753
OL98: Outlook Calendar Template for Word Available on MSL
REFERENCES
For more information about creating solutions with Microsoft Outlook 98,
please see the following articles in the Microsoft Knowledge Base:
180826
OL98: Resources for Custom Forms and Programming
182349
OL98: Questions About Custom Forms and Outlook Solutions
| Modification Type: | Major | Last Reviewed: | 5/13/2002 |
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| Keywords: | kbprb kbProgramming KB183024 |
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